Clients.All，Clients.Caller和Clients.Other引发TypeLoadException

Question

我通过界面进行了简单的Typed Hub设置。我可以成功连接到SignalR集线器。

namespace POC.WebSocket
{
    public class ApiResultHub : Hub<IApiResultHubClient>
    {
        public async Task SendMessage(string user, string message)
        {
            await Clients.All.ReceiveMessage(user, message);
        }

        public override Task OnConnectedAsync()
        {
            Clients.Caller.ReceiveMessage("newUser", $"{Context.ConnectionId}");
            return base.OnConnectedAsync();
        }
    }
}

但是，当我尝试调用客户端集线器方法时，它将引发以下异常：

这是我的其他课程文件： Startup.cs

namespace POC.WebSocket
{
    public class Startup
    {
        public Startup(IConfiguration configuration)
        {
            Configuration = configuration;
        }

        public IConfiguration Configuration { get; }

        // This method gets called by the runtime. Use this method to add services to the container.
        public void ConfigureServices(IServiceCollection services)
        {
            services.AddCors(o => o.AddPolicy("CorsPolicy", builder =>
            {
                builder
                    .AllowAnyMethod()
                    .AllowAnyHeader()
                    .WithOrigins("https://localhost:44324", "https://localhost:44326")
                    .AllowCredentials();
            }));
            services.AddSignalR();
            services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_1);
        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app, IHostingEnvironment env)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }
            else
            {
                app.UseHsts();
            }

            app.UseCors("CorsPolicy");
            app.UseSignalR(routes =>
            {
                routes.MapHub<ApiResultHub>("/apiResult");
            });

            app.UseHttpsRedirection();
            app.UseMvc();
        }
    }
}

IApiResultHubClient`T.cs

namespace POC.Common
{
    public interface IApiResultHubClient
    {
        Task ReceiveMessage(string user, string message);
        Task SendApiResponse<T>(ApiResult<T> data);
    }
}

还有其他人看到过这个问题吗？我发现很少有类似的问题可以连接到集线器本身。但是，如上所述，我能够成功连接到集线器，只是无法解析Clients.All，Clients.Caller或Clients.Others。

今天更新了所有库：

.Net Core版本2.1.4 .Net SignalR Core版本1.0.3

修改： 找到该异常的详细信息：

  

方法“ SendApiResponse”的类型   'Microsoft.AspNetCore.SignalR.TypedClientBuilder.IApiResultHubClientImpl'   从程序集“ Microsoft.AspNetCore.SignalR.TypedClientBuilder”中，   版本= 0.0.0.0，文化=中性，PublicKeyToken =空'没有   一个实现。